Rumor has it, the Cadillac Converj luxury coupe has been approved for production – again. After wowing the crowds at the Detroit Auto Show in January 2009, and enduring an on-again off-again release deal with General Motors, the sleek sports coupe will be Cadillac’s first plug-in electric sedan, and on top of that, the fastest!

Inside sources are optimistic that the coupe is back in the GM production plan for good and will most likely be launched as a 2013 and a 2014 model. Based on the same platform as the Chevy Volt , the Converj will feature an updated version of the extended-range electric powertrain that allows it to travel 40 miles on a single charge without fuel. This update will also include faster acceleration.

Many say it’s about time Cadillac steps up their plug-in game. The brand’s sole electric vehicle is still the 2011 Escalade Hybrid, not exactly the paradigm of green transportation, nor the ideal gateway vehicle for those looking to transition. With the Chevy Volt, the most fuel-efficient compact car in the US almost completely sold out this year, and other luxury brands such as Mercedes-Benz, BMW and Audi preparing to carry multiple plug-in options, Cadillac has the opportunity with the Converj Coupe, to find its place amongst the innovative electric vehicles while still remaining the classic luxury brand.